ASTROSAT CZTI

Data Quality Report

Orbit 20210719_A10_094T26_9000004554_level2

Creation date: 2021-07-20T09:45:12.453763
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_094T26_9000004554cztM0_level2_bc.evt modeM0/AS1A10_094T26_9000004554cztM0_level2_quad_clean.evt
Size (bytes)276,877,440137,033,280
Size264.1 MB 130.7 MB
Events in quadrant A1,477,398948,180
Events in quadrant B3,012,067942,909
Events in quadrant C1,528,673931,805
Events in quadrant D1,963,557920,754

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126380
B0179390
C0134700
D0141590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5821210.360763%
B5821931.597664%
C58211632.800206%
D5821380.652809%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7200 5820 0 0 0.00% 0.00%
B 7200 5820 0 0 0.00% 0.00%
C 7200 5820 0 0 0.00% 0.00%
D 7200 5820 1 1 0.01% 0.02%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 10649 126.56 383 379 81.1
A 0 226 2537 26.59 383 379 81.1
A 12 194 2426 25.23 383 379 81.1
B 6 159 1482636 20519.61 379 373 72.2
B 4 80 43475 596.68 379 373 72.2
B 0 190 21716 295.46 379 373 72.2
C 0 10 30862 340.37 375 377 89.6
C 3 233 23548 258.71 375 377 89.6
C 2 114 11201 120.85 375 377 89.6
D 8 195 263888 3028.45 384 373 87.0
D 10 203 159508 1828.86 384 373 87.0
D 2 250 45724 521.2 384 373 87.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter